摘要
选取美舍河上、中、下游底泥进行取样,测试底泥样品的物理参数(p H、容重、比重、含水率)、营养参数(有机质、速效氮、有效磷、速效钾)和污染物(苯并α芘、总氰化物;锌、铜、镍、镉、总铬、铅、汞、砷)。采用潜在生态危害指数评价法对底泥重金属污染情况进行评价,评价结果表明,测试底泥中污染度Cd<8,潜在生态风险值RI<150,属于无污染水平,底泥重金属污染程度在上、中、下游表现出不同的情况,上游底泥中金属镉和铜、中、下游中锌和镉高于其他重金属。综合分析底泥物性参数、营养参数和污染物水平,美舍河底泥可做种植土壤利用,底泥浸液白菜种子3 d发芽率为84%、86%和80%,与种植土壤浸液发芽率相当(84%)。
Bottom muddies were selected from the upper,middle and lower reaches of the Meishe river,and the physical parameters( pH,volume-weight,specific gravity,percentage of moisture),nutrient parameters( organic matter,available nitrogen,available phosphorus,available potassium) and pollutants( benzo-alpha-pyrene,total cyanide. zinc,copper,nickel,cadmium,total chromium,lead,mercury,arsenic) were tested. The pollution condition and potential ecological risk of heavy metals were evaluated through potential ecological risk index evaluation method,the results showed that the pollution degree Cd< 8 and potential risk index RI < 150,the bottom muddies were in pollution-free levels. The pollution degree of heavy metals in sediments was different in the upper,middle and lower reaches,Cd and Cu in the upper sediment,Zn and Cd in the middle and lower reaches was higher than that of other heavy metal ions. Based on comprehensive analysis of sediment physical parameters,nutrient parameters and pollutant levels,Meishe river sediments could be used as planting soil. The germination rate of Chinese cabbage seeds in sediments leaching solution were 84%,86% and 80% in three days,which were similar to that in planting soil leaching solution( 84%).
作者
王向辉
周鑫
吴高蓉
滕倩
刘又华
刘艳玲
史载锋
WANG Xiang-hui;ZHOU Xin;WU Gao-rong;TENG Qian;LIU You-hua;LIU Yan-ling;SHI Zai-feng(College of Chemistry and Chemical Engineering,Key Laboratory of Tropical Medicinal Plant Chemistry,Ministry of Education,Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province,Hainan Normal University,Haikou 571158,China)
出处
《科学技术与工程》
北大核心
2019年第15期360-364,共5页
Science Technology and Engineering
基金
海南省重点研发计划项目-社会发展方向(ZDYF2018170)
教育部创新团队项目(IRT-16R19)资助
关键词
美舍河
底泥
重金属
资源化利用
潜在生态危害指数
Meishe river
bottom muddy
heavy metal
resource utilization
potential ecological risk index
作者简介
第一作者:王向辉(1982—),男,汉族,河北人,博士,副教授。研究方向:土壤污染防治与资源化。E-mail:god820403@163.com;通信作者:史载锋(1969-),男,汉族,江苏人,博士,教授。研究方向:水环境治理与资源化。E-mail:zaifengshi@163.com。
